SS 18-8 bolts 304 grade?

1985 CCX · #1 (**permalink**) 07-01-2022, 03:23 PM

Anyone know the bolt grade for SS 18-8
I think SS304
?????

Skip J. · #2 (**permalink**) 07-01-2022, 05:44 PM

Found the attached article which might provide some clarification for the distinctions:

https://www.marshfasteners.com/diffe...vs-304-vs-316/

Morris · #3 (**permalink**) 07-01-2022, 07:03 PM

SS is about a grade 5 equivalent....

joyridin' · #4 (**permalink**) 07-02-2022, 04:55 AM

It varies, but it is between a grade 2 and a grade 5.

sunman · #5 (**permalink**) 07-02-2022, 07:14 AM

The Bumax Ultra stainless fasteners are the worlds strongest.
Ultra refers to the cost.
Equivalent to grade 8 or better developed in Sweden for undersea robots.
I’m using them on the a-arm alignment/antidive brackets.
The brackets are 304 stainless steel.
Electro polished, shine like chrome forever.

Morris · #6 (**permalink**) 07-02-2022, 09:59 AM

I think ARP has some strong SS bolts.....

xb-60 · #7 (**permalink**) 07-02-2022, 06:59 PM

Quote:

Originally Posted by 1985 CCX

Anyone know the bolt grade for SS 18-8
I think SS304
?????

A 304 stainless steel has 18% chromium and 8% nickel content, so unless there is anything more specific to add to your question, 18-8 and 304 can be regarded as the same thing.

Cheers!
Glen

sunman · #8 (**permalink**) 07-02-2022, 08:54 PM

18-8, 304 hardware is closer to a 2, it tarnishes, corrodes and the threads gall. Needs nickel anti seize on every nut.
I electro polish 304 angle to prevent degradation.